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Michael J. Armstrong, MD

NPI 1336191162ActiveIndividual· Emergency Medicine· Milwaukee, WI

Emergency Medicine (MD) in Milwaukee, Wisconsin, trained at Medical College of Wisconsin (class of 1994). 549 Medicare patients in 2024, $71,709 paid; nearly all of their 377 Part D prescriptions were generic (96%). Abbott Laboratories reported $15.56 in payments in 2025, mostly food and beverage.

Overview

NPI1336191162
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedMay 17, 2006
Last updated in NPPESMay 16, 2008

Specialties and licenses

TaxonomyCodeLicenseState
Emergency Medicine Primary207P00000X36877-020WI

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Nov 10, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026No match—
New York OMIG · Nov 11, 2026No match—
Ohio Medicaid · Nov 11, 2026No match—
Pennsylvania Medicheck · Nov 11, 2026No match—
Washington HCA · Nov 11, 2026No match—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)Enrolled Practitioner - Emergency Medicine (WA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients549
Services billed711 across 35 procedure codes
Paid by Medicare$71,709

Part D prescriptions in 2024

Prescriptions (claims)377 · 394 30-day fills
Patients220
Total drug cost$9,350
Generic share96% of claims

Medicare sources and data years

Education and affiliations

Medical schoolMedical College of Wisconsin
Graduation year1994
Medicare specialtyEmergency Medicine

Medical groups

Hospital affiliation

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$15.56 · 1 payment from 1 company

Top paying companies in 2025

CompanyAmountPayments
Abbott Laboratories$15.561

What the 2025 payments were for

  • Food and Beverage$15.56 · 1 payment

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

Other emergency medicine physicians in Milwaukee

All 371 emergency medicine physicians in Milwaukee · All emergency medicine physicians in Wisconsin